/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerInput.h
Returns the list of keys mapped to the specified Axis Name
const [TArray](API\Runtime\Core\Containers\TArray)< [FInputAxisKeyMapping](API\Runtime\Engine\GameFramework\FInputAxisKeyMapping) > & GetKeysForAxis ( const [FName](API\Runtime\Core\UObject\FName) AxisName ) const